Apple's line of MacBook Pro laptops was intended for the professional and power users. The MacBook Pro line includes the MacBook Pro 13" Unibody, MacBook Pro 15", MacBook Pro 15" Unibody, MacBook Pro 17", and the MacBook Pro 17" Unibody.

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boot up problem yes-chime sound but no screen no external display

MacBook Pro 15" Core 2 Duo Models A1226

iT BOOTS AND CHIMES ONLY A BLACK SCREEN

i SWAPPED MEMORY NO DIFFERNCE

i PLUGGED IN A EXTERNAL MONITOR -NO DISPLAY

I HAVE TRIED BOOTING OFF OPTICAL DRIVE NO DIFFERNECE

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Sounds like a blown Video Card or Logic board... If had been something else (HD or internal display chain) you should have seen something on the external monitor.

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